1. Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials
2. Xi’an Jiaotong University
3. Xi’an 710049
4. P. R. China
5. Department of Materials Science and Engineering
6. NUSNNI-NanoCore
7. National University of Singapore
8. Singapore 117411
9. Singapore
10. School of Materials Science and Engineering, University of New South Wales Australia, Sydney
11. New South Wales 2052
12. Australia
13. Centre for Bioimaging Sciences
14. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University
15. Xi'an 710049